Product Design & Manufacturing

A: That 3% is stiffness-driven, not yield-driven. Elastic modulus is the boundary here: ~170 GPa for ductile iron versus ~70 GPa for aluminum. Geometry and CAE correlation stay intact if you swap material, while ribbing or heat treatment shifts local stress but barely moves global compliance.

A: The 0.8 profile only means something if the datum simulates the real constraint. A non-functional primary datum lets the arm float during inspection, masking a geometric error that shows up as kinematic drift once bolted in.

A: The acceptance window is tight, and tire μ shifts easily by more than 3%. Homologation locks the tire variant first; everything else is second-order if the rubber isn’t what the type approval assumes.

A: ASIL safety goals are built on assumptions and margins. A 3% shift can eat into those margins, so the standard demands traceability and re-evaluation, not a gut call.